My aunt tried to comitt suicide

That is what I thought, that she is not mentally stable and the instability is making her make the wrong choices.
I know that in a realtionship nobody else has to get involve, but when she did what she did it's hard to saty away from her. I only want what is best for her and apparently she doesn't want that, I'm sure I will get over it, but is going to take me a while